Effect of Particle Immersing in Various Concentrations of Acetic Acid to Enhance the Sandwich Particleboard (SPb)
Abstract
Low dimensional stability and strength properties are weakness of particleboard. Particle immersing in acetic acid solution is one of treatment to improve dimensional stability of particleboard. Furthermore, the utilization of material that has good strength as surface layer will increase of strength properties of particleboard. The objective of this research was to analysis the effect of immersing particle in acetic acid solution on physical, mechanical, and durability properties of SPb made from bamboo belangke and corn stalk bagasse bonded with isocyanat. Bamboo strand and corn stalk bagasse soaked in the acetic acid solution at various concentrations 1, 3, 5, and 7% (%v/v) for 24 hours. Board was produced in size of 25 by 25 cm2 with density and thickness target of 0.70 g/cm3 and 1 cm respectively. Bamboo was place for surface layer and corn stalk bagasse as core layer with composition ratio of 1:2:1. Isocyanat resin used as binder in SPb manufacruring. Hot pressing temperature and time were set on 160∘C and 5 minutes with pressure of 30 kg/cm2 . Durability testing of SPb using graved yard test method was conducted for 3 month. The results showed that almost all board fulfill standard excepted of internal bond value. Amount 3% acetic acid concentration resulted best quality of board. Durability test showed that weigh loss of SPb in this research ranged of 2.45 to 6.07%. It was classified into moderate to durable class.
Keywords: Sandwich particleboard, acetic acid, pre-treatment
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